Mandy Moore, Milo Ventimiglia, Justin Hartly and Chrissy Metz from "This Is Us" joined Billy Eichner for his famous bit Billy on the Streets, and they definitely didn't know what they were getting themselves into.
Billy takes the cast around the streets of New York and approaches random pedestrians, asking if they've seen "This Is Us". While some were excited to see the cast and new exactly who was standing in front of them, other didn't even know what was going on.
One guy even asked Mandy Moore if she was single! Check it out below.